Stall gate for race tracks



Sept. 13, 1932. E. BIIRTWISTLE ET AL 1,87%339 sTALL GATE Foa RACE TRACKS Filed Deb. 21, 1929 2 Sh'etSShai 1 A e2@ afnam Sept i3, 1932. A. E. BliTwlsTL E1' AL 1,876,839

STALL GATE FOR RACE TRACKS Filed Dec. 2l, 1929 2 Sheets-Sheet 2 f' am .agp

nf HH y mi J E2? 1' "L wwf/MM 3 a "Q ,M ATTORNEY.

' 4 in such a manner Patented Sept. 13, 1932 ARTHUR E. BIBTWISTLE AND ANTON ROE-SER, QF BROOKLYN,

NEwYonx s'rALL GATE Fon anca Taacxs application mea :December 21, 1929.v semi 1w.-1=15,7oo.`

Our invention relates to stall gates for y race tracks. It is particularly intended for the use at the start in connection with horse races. y 5 It has been realized for a long period of time by those interested in horse races that it is of vital interest to provide proper means at the starting point to avoid the many troubles and accidents which are apt to occur `and which very often do occur, because the horses are not properly aligned or kept apart.

, It has been the object of our invention to overcome the short-comings of the methods used at the present time to properly start olf races and some of the objects of our `invention are, first, toseparate, at the starting oint of a race, the horses from each other so that they cannot excite, annoy or harm each other; second, to rovide stall gates .which are firmly and solidly disposed at the starting point of a race; third, to confine in a vertical direction,

the starting point on a race track so that the horses are prevented fromv rearing; fourth, y, to construct the walls confining the stalls and the collateral structure 1n such a manner, that vthe view of the s ectator isobscured as little as possible; lift ,"to lprovide means on, the individual stalls preventing the horses from engaging their feet below7 the partitions, Qr

upon the walls of the stalls to rear; sixth, to provide means which .discourage kicking by the horses, with; out harming them; seventh, tol remove the *5 stall gates in the-shortest possible timenfrom vthe racetrack, after the start, so that, on an endless track, the track is free, when the horses pass the starting point later on eighth, to bringv about said removal of the stallgates struction above or on the race track, nor any fastening or, anchoring means in thersoil of the track; ninth, to

y remove the `stall gate in such a manner land to such an extent, after the start, that it will be Vpractically ,removedV from view,l and lthat it will not even throw a shadow upon the track; tenth, to colla se the gate in a narrow, lon vitudinal space e` sides the track, after it v as been removed,

5" lo that a mimmum amount of space is re-` the stalls for horses at f when they try on stalls,

that there remains no ob quired for our stall gate when out o f use; eleventh, to provide means for repositxonin the'stall gate, when one race one is to be begun; forshifting the posi side the track, so that the start may ranged at any point to be abletooperat prime movers or motors,

of one the partitions moval in lsuch track the partitions of the stalls,

ofthe track;

orv two men; fourteent within a short period of time, has been finished and the next twelfth, to provide means tion ofthe stall gate bebe arthirteenth, e our stall gate without by sim le operations a0 to collapse of the stalls during the rea manner that they clear, an

fifteenth, to allow the collapsing of e5 the removal of the gate from the track, and the vertical collapsing o by one simple,y use the weight removal' from. t swing the gate o to collapse it beside the include in the operation f the vwhole structure of the gate single operation; sixteenth, to

of the gate to expedite its 'I9 he race track; seventeenth, to if the track and, successively,- track; eighteenth, to of the gate means for anchoringl the lower ends of the partitions 'I6 separating when the ga position rangemen such an but no the construction'of our stall gate in such manner that it obv1 and is foolproof tieth, to protect 'the jockey as well as the horse at the These and other objects we attain by thev starting point of a race.` f

the stalls in the soil of the track,

te has been brought into operative -harmful marks or `disart of the'levelof the track are caused choring; ninteenth, .to simplify ates care and attention 1n its operationyand twenmechanism illustrated in the accompanying drawings in which, Figure 1 shows our invention. The'improvement is in oper- 90 ating position on the race track.

Figure 2 showsy a corresponding l in the Figure 3 shows a correspon looking upon site to the one track.

direction ofthe race track.

top view of the device of front view ding side view, the device from a side oppofrom which it overhangs the FigureA shows a sectional, sectioned and enlarge tion as d side view taken in the Figurev 2, the device being sectione same direclsubstantially along a vertical plane right in front of the supporting truck; this view shows the upper part of the device in an intermediary operating position, swung through.90, off the track.

Fi re '5is a schematic front view correv spon 'ng to the view of Figure 2, showing t e device in operative position.

lFigure 6 is a corresponding schematic side m view of the device in operative position, this view being taken from the side u on which the stall te is supported beside t e track.

The sclematic vlews of Figures 7 and 8 are taken in directions corresponding to the views of Figures 5 and6, respectively. They show the device in an intermediary position after it just has been swung away from the track; `this position `of the device corresponds to that of Figure 4. q gg Figures 9 and 10'are schematic views taken in the direction of the views of Figures 5 and 6, respectively, and showthe device at rest, when not in operation, besides the track. Figure 11 is a side view of a modified part of the partition. A

Similar numerals refer tosimilar throughout the various views. ,4 From an'engineering'point of view our invention resembles a cranel which may be classified as a rotary gantry; it is essenparts ltiallymadev up of four elements, a truck 14,

jibs 15 journaled upon the truck in `pintle 16 and supported by struts 17, a boom 18, the rollers 19 of which run in channeled sec- 35 tions of the rails of the jibs 15', and the partitions 20y swingably` suspended from the boom 18. p

The truck 14 has a top 21; in thev understructure below are journaled'the shafts 23 race-track 26, on the infield, on the outfield, oron both fields, the steel ,rails 24 are mounted upon a suitable `base 25. Upon these rails the truck 14` is arranged to run back andforth besides the race-track and a small brake 27 is arranged upon the understructure of the truck by means of which the truck carthestallggte maybe located in any x position side the race-track, said 50 brake 27 serving to lockthe shafts 23 upon which are fastened the wheels 22.

Upon the top 21 of the truck `14 is rotatably mounted theplatform 28. At the axis, around which the platform 28 is adapted to rotate, the platform 28 is supportedupon vthe top `21 `by a suitable thrust, rolleror ball-bearing 29. At suitable points below the platform 28 are mounted thereon brackets 30 which contain rollers 31. In the drawings we show Just two such brackets and rollers, y which, in conjunction with ball bearing 29, represent trian larly arranged means of support, the rol ers 31 resting upon the top 21- of the truck in a circular track 32 along as which they are adapted to roll when the platwith car wheels 22' at their ends, Beside the form is rotated around its fulcrum at the center of the ball bearing 29. Of course a multiplicity of rollers 31 may be arranged below the platform to run along track 32, so as to afford additional means of support for the platformv28. `Other, rollers o this kind ma bel fastenedy underneath the platform, w ich additionally support the platform but which run in other tracks in the vtop 21 oftruck 14 which tracks are ,concentric to the track 32. Rollers or balls directly located between the top and the' platform and retained in suitable recesses or races on the respective top and bottom sides may, of course, as mechanical equivalents, take the place of the rollers31 on brackets 30. From the top 21 of the truck 14 extend upward a plurality of teeth which make up the sector 33 of a bevelgear concentrically dis osed in respect to the ball bearing 29 an the track 22. A bevel gear 34 complementarily engages the sector 33. The bevel gear 34 is rotatably mounted and thrustwise restrained upon the shaft 35 which' is journaled at one end in a bear 36 vnear the lowerend of stand 37 upon the platform, its other end being rotatably supported by a bracket'38 onthe other side of the platform.' At its upper end stand 37 has another bearing 39, on

which yis journaled a shaft which carries onl one end a crank handle 40 and on the other end a. sprocket 41. There is a similar sprocket mounted on` shaft 35 vin alignment with sprocket"41 and said sprockets are connected by the endless chain 42, so that operation of crankhandle 40 will rotate shaft 35. Two bearings 43 arey mounted u on the sides of the platform. In these bracliets is journaled the pintle 16 extending therethrough from the two jibs 15. These two jibs are connected by a cross bar 44 at their upper ends; otherwise the space between them is clear, providing an .opening in which theboom 18 moves up and down. vThe rails of the jibs 15 are provided with channel-shaped troughs which face each other and which rectilinearly extend along substantially the whole length of the j ibs'. But attheir upper `ends,below the connectin cross bar 44, said troughs have a slight kin p so that the upper rollers 19 on boom 18 are guided to move for a short distance in horizontal direction when the booml reaches its highest position of movementalong the channels in thejib rails. There are solid cross pieces 45 upon the lower side of the boom 18; these cross pieces 45 cometo rest upon the compression-springsupported cushion lates 46 extendin upward from the platy orm V21, vwhen the oom reaches its lowest point of travel along the lao jib rail. f When 4the boom rests solidly upon the cushion plates 46, its upper and lower rollers 19 are `in alignment'with clearance openings 47 and 48 vin theup er and lower edge, respectively, of' the c annel-shaped the approximate the trough of the jib rail. The jibs 15 are counterbalanced at their lower ends by counterweights 49 which tend to retain the jibs in the osition shown in Figure 2. But when the m 18 isin its lowest position along the jib rails resting upon vthe cushion lates 46, the struts 17, hinged upon the ji in brackets 50, can at their lower ends be brought out of en agement with catches 51, which retain said ower ends upon the platform; then the struts can be folded back, the jibs can be rotated around the pintle 16, the rollers 19 on the boom passing throu h the clearance openings 47 and'48 and the )ib railscome into an almost horizontal posithe cross bar 44 coming to rest upon the top of the boom 18. The counterclockwise rotation of the jibs causing a lateral displacement ,of the counterweight 49, the weights of the jibs on both sides of the ypintle are arranged in such a manner that the parts of the jibs, extending tothe left lof intle outweigh the parts to the right of tlEe pintle when the jib rails are in the substantial horizontal position described, whereas the weight ofthe jibs is slightly heavier to the right of the pxintle than to the left of the intle when t e jibs are in the osition of igure 2.

f T e hoisting ropes or cables 52 are attached to pins 53 extending from the sides of the boom. These ropes extend around sheaves 54 and -55 journaled upon pins 56 and 57, respectively, mounted near the bottom sides of the rails of the jibs 15. From the lower sheaves 55 the ropes pass onto Winches 58 which are solidly7 mounted upon the shaft 35. A brake 59 is also mounted upon shaft 35; the brake lever 60 extends in a direction substantially arallel to and upon level oi) said shaft 35 to a point alon ide of the stand 37, where it is subject to t e control of the foot of the operator and where a catch is provided for to permanently lock the brake, so that the operator of the stall gate has at his disposition, alongside of the crank handle '40, a brake by means of which he can temporarily retard and restrain the rotation of shaft 35; or he may thereby lock said shaft permanently.

It has 34 is rotatably mounted but thrustwise retained upon the shaft 35. Alongside of the bevel gear 34 there is slidably keyed onto shaft 35 a pin clutch 6l, the pins of'which are adapted to engage suitable openings in the bevel gear 34. The engagement and disengagement of the pin clutch 61 in bevel gear 34 is controlled by the forked lever 62 which is fulcrumed in a bracket 63 mounted on the top of the platform 21. The forked lever 62 engages a cylindrical annular groove in the pin clutch 61 by means of pins lV64 extending thereinto rand upon the free end of lever 62 is journaled a roller 65. That roller normalbeen stated above that the bevel gear ly extends partly below the boom 18 so that it is struck by t e boom, when it is lowered below the osition indicated in Figure 4. The boom pus es the roller y65 out of its way, when it is brought still further down; then the forked lever swin tothe right, the pin clutch is disengaged rom the bevel gear 34 and said gear is notl operatively connected any more to the shaft 35.

The boom 18 is a structural steel beam with a counterweight 66 at its right end. When the device is in the operating position of Figure 2, the greater part of the boom 18 extends over the fence 67 onto the track. From the part of the boom, which thus overhangs the track, extend downward a series of extension brackets 68 on both sides of the boom. In .these extensions are journaled the shafts 69. Upon the ends of the shafts 69 are fixedly mounted the double levers 70. The vertical arms 71 of'these double levers are hollow and `by means of set screws 72 on the sides thereof 'the extensions 73 on the upper ends of the gates 20 may be set in said vertical arms at a higher or lower position, ac'- cording to the distance to which the partitions are to extend downward from the boom to bring them into contact with the track. Frames 74 extend around the partitions, representing structural parts thereof. The upper section of said frame of the partitions is open and a screen 75 of wire mesh is mounted therein, to bring about the desired physical separation of adjoining stalls from each other. A screen 76 consisting of similar wire mesh, is mounted upon the bottom side of the boom, extending above all the stalls confined by the partitions 20. This screen 76 serves to prevent the horses from rearing which would have the undesirable consequence of having the horse fall over backwards.

At its lower end the screen`7 5 merges into a dashboard 77 which is preferably made. of suitable, strong metal. `It is smooth on its ltop and flared downwardly, on both sides of the screen, so that the hoofs of an unruly horse, when they come down on this dashboard, will slide oil, so that it cannot support itself thereon, but has to stand on the ground. The bottom sides of the dashboards 77 merge into straight Walls 78, which extend from said dashboards to the bottom cross pieces of frames 74. These walls, on both sides of the partitions converge towards the bottom and they are lpreferably made of strong wooden boards (Fig. 3), or rugged matting (Fig. 11) forming a padding 78 on which 1t is impossible for the horses to hurt themselves by kicking and which are strong enough to form a permanent wall on the lower sides of stalls. Since the round frame 74 extends along the bottom of the partitions, the smooth Curvature thereof prevents the hoof of a horse from being caught thereunder.

i Figure '.11 shows a modified execution of thepartition shown in vFigure 3. According to thisl view I may extend the dashboards 77, calorie side beyond the upper width of the artition, the padding 78 below said dashboards (which is here shown made out of rug ed mattingl) correspondingly extendin tot eright. T eframe 4, instead of exten ing straight downward from the vertical arms 71 of the double lever 70, is curved to the right, where it borders the screen 75, so that it surrounds the widened lower part of the partition. The inclined part 90 of the frames 74 thus upwardly borders the protrudin `part of the partition and it is arrange at a height which allows the head of a race horse to be seen thereabove, so that the J b spectators in the grand stand, which is ordinarly arranged next to-the track upon the outfield, obtain a full view of the head of the horsestanding in the stall and of the jockey riding the horse. When the stall gate 1s constructed in this manner the width of the boom and, correspondingly, the width of the whole stall gate, maybe reduced,the width of the lower part of the partition in Figure 11 be- Ving approximately that of the width of the partition of Figure 3. n

Arms 79 extend, at an angle u wardl from the double levers 70`and the ree en s of these several arms 79, thus extending upward from the various partitions 20, are hinged by pivots81 upon a connecting `rod 80 which extends transversely.` The last lever arms 79 are hinged upon the right end of the connecting rods 80 by means of shafts 82, upon which also hinge the forked levers 83. The free ends of levers83 carry upon pivots 84 the rollers 85; from the sides of the boom 18 extend laterally the pivots 86 upon which are mounted the two rollers 87 against the bottom sides ofy which rest flat parts of the forked levers 83. The upper sides of the jibs represent track-like cam arms 88 which form part of the structural frames making up the jibs, and upon which rest the rollers 85. At their lower ends the cam arms 88 extend in circular curves around the pintle 16. When the boom 18 slides downward from its top position along the rails of the jibs, the rollers 85 roll onto the cam arms 88; their upward movement is restricted by the rollers 87 so that the forked levers 83 move towards the right, pulling with them theconnecting rods 8 0, thus bringingv about a clockwise rotation of the double llevers 70. This causes the partitions to swing from their vertical position towards the left, upwards, until they reach a substantially horizontal position, the various partitions being folded up and resting against each other, when the. rollers `85 have rolled onto the I 4 straight parts of the cam arms88.

The operation of our stall gate may be best described, starting out from the position of Figures 1, 2 and 3, i. e., the operative position of the stall gate. B means of the brake 59 the operatin shaft o our device is locked in positlon. W en the brake is unlocked, and the shaft 35 is thus released, ythe weight of the boom will have a tendency lto cause it to the rails to the jibs. If this downward movement of the boom `by its own weight should be too fast, thewoperator'may retard this downward movement by operating the brake lever 60, since .y the hoisting ropes or cables 52 connect the boom to the shaft 35. Said the hoisting drums on shaft 35,v when the b oom moves downward along therails of the At the beginning of the downward motion of the boom onlythe lower roller 19 moves downward, whereas the upper rollers 19 move horizontally along the short horizontal portions at the u per ends of the troughs in the rails of the jibs. `The respective motions of the two, upper and lower, sets ofkrollers 19 will cause a slight tiltingof the boom in a direction of clockwise rotation, until the upper rollers 19 have rolled into the long, straight, inclined portions of the troughs in the rails of the j ibs, in which the lower rollers move all the time. By the clockwise tilting ofthe boom, the lower ends of the partitions 20, which have been 'more or less engaged upon, or buried in the soil 26 of the track, are lifted out and away from said soil..

As the boom contin/ues'to travel downward the cam parts 88' ofthe jibs will force the rollers 85 to move to the right at a rate of speed greater than that at which the boom itself moves to the ri ht, the upward movement of the levers 83 ing prevented by the rollers 86, which are stationarilymounted on the sides ofthe boom, and along the lower periphery of which 'the levers 83 travel as the roller 85 is pulled tothe right bythe cam art 88 of the jibs. 'T-his movement of the ever 83` tothe right, at a speed exceeding that of the corresponding movement of the boom, will pull the rods 80 in the same direction so thatthe levers 89 are pulled in clockwise rotation, causing the partitions 2 0 to swin up, in clockwise rotation, until they are olded, almost flat, against the bottom of the boom, when the boom is moved downward along the rails ofthe jibs so yfar that the rollers 85 have rolled ontothat part of the cam part 88 which is parallel to the troughs in. which the rollers 19 are rolling. It is observed that between the upper edge of the screen parts of the partitions and the shafts 69, around which the partitions are arranged to swing, there is a clearance space, in which thev dashboards of the adjoining partitionsare accommodated, when the partitions are lfolded against the bottom of the boom.

roll, by means of rollers 19, downward along hoisting ropes or cables are unwound -from 'l "Pio i' 'to 4inthe ibs.

When the boom has been lowered into its lowest position of rest upon the cushion plates 46, the rollers 85 have reached the end of the straight section of the cam parts 85 and are about -to pass onto the curved sections of the cam .partsj8l8, whichsections are'y arranged circularly around pintle 16. If therefore, at

this point of the operation, the struts 17, which support the jibs, are disengaged from the catches 5l,- and the jibsare rotated in counterclockwise rotation, kthe openings 47 and 482clearingthe rollers-l9, the rollers 85 will roll along the circular sections'of the cam parts 88, the levers 83 being retained swing upward, thereby making the net amount of weights actually shifted during the lowering operation of the boom a comparativelyl small one. The degree inI which the swingingupward of the lpartitions counterbalances the descending weight of the boom can readily beacontrolled yand .adjusted by modification of the curvature ofthe upperend of thecam part 88. Theweight of the descending boom thus `being compensated, it

will be understood that the operator of the device will nothave to lift the actual and .full weight .of the boom and of the partitions from'the-collapsedposition to the operative position when he returns the stall gate byv operationof the windlass. We choose however to `balance weights during the lowering and raising operations in. such a manner that lthe lowering proceeds quicker'than the raising. Thus the stall gate can be removed in a very short period of time from the track; vand that may be'vital and important, when the endless track is small and whenv the racing horses pass the starting point within a short period of the time after the start. Y 1 y l In the description ofthe collapsing of the stall gates and of the operation of returning Yit into an operative position we have, up to this' point, entirelyv ignored the swinging of the stall gate `around a vertical 'axis `simul- The shaft 35, on which the windlass is mounted, isdirectly taneous with those operations.

geared, by the bevel gear 34, to the sector 33. When the shaft is vrotated by the-weight of the descending boom in thecollapsing operation, or by the operation of the crank, when the stall gate is to be `brought into operative position, ythe platform 28 will rotate around the center of the ball .bearing 29. The parti- 'tions 20 being lifted up while the boom descends, they clear the rail or' fence 67 when `the boom,during the rotation of the platform, swings over said fence, until the boom, from a position of extending at right angles over the track has been swung into a position parallel with and, beside the track. When the boom reaches this-position it still is a'certain distance above its lowest, fully collapsed'position, and, the platform, still being geared to the truck, upon further lowering of the boom would continue to swing `around a'vertical axis,.away from its position parallel 'to the track, if the said swinging operation would y v not be interrupted.

This interruption brought by disconnecting shaft 35 and sector 33 at this point of the operation. ldhen the boom has been swung to aposition parallel to the race track, it has been lowered so far, that its lower edge strikes the roller 65 on the forked bracket 62. It pushes that roller aside and the forked bracket, swinging in clockwise direction, pulls the pin clutch 61 out of engagement with the bevel gear 34so that the platform with the boom will not rotate any more while the lowering voperation of the boom is continued, but

yit willv remain in a position parallel to the trac-k. Shortly after that the boom comes to rest upon the cushion plate 46, the tension of which may be balanced in such a manner that e, 1t offsets and counterbalances, to a great eX- tent, the descending weight of the boom and of the-partitions. Vhen therefore the operatordesires to bring the stall gate from a fully collapsed position back into its operative position he will not have to lift the full weight of the boom but the lifting operationl will be greatly facilitated by the counter'action of the cushion plates 46. During the raising operation, after the boom has been lifted oif the f cushion plates 46, the roller 65, having rolled upon the side of the boom, will return to its normal` position of Figure 4, the forked bracket 62 swingingy in counterclockwise diios rection vand the pin clutch again engaging the bevel gear 34, so that the platform starts to swing again, and swings back into a position at right angles and extendingover the track while the boom is being raised. In the meantime the partitions 2() have swung down and,

at the end of the operation of returning the stall gate into its operative position, the boom slightly tilts in a counterclockwise direction so that the lower ends of the partitions20 come to rest on or even to sink into and to engage uponr the soil 26 of the track. Set

screws 72 allow adjustment ofthe distance to whichthe partitions hang down from the boomand thus thedegreeto which the partitions e-ngage upon the to suit circumstances.

The three rstages of positions assumed by kthe stall gate,when in operative position,

after having been swung from the race track, and ina fully colla sed `position,are shown in Figures 5 and 6, and 8, and`9 and 10, re-

ground can be changed izo iso

spectively, thefindica'tion of the fence 67 in `thesevarious figures facilitating theobservw tionvolf the respective positions of the stall gate fin respect to the racetrack. Y i

Tle full function of our stall gate repre` sents alcomplex aggregate of various mechanical movements for eachsone ofwhich. a

i il? tions Iand Asimultaneously :folding said partitrained engineer can lreadily substitute ame,- chanically .equivalent modification.. It is therefore understood that we Vdo not desire to have our invention interpreted strictly in the llight of the accompanying drawings but we wish to protect its full scope., on the basis Vof the above, exemplary* description, .as laid down in the following claims.` n

,Weclaima ,1' n AIl. Ina'stall gatefor jockeyeriddenrace horsesy stalls, partitions laterally separating said stalls, and substantially horizontally dis# ,posed dash boar.ds,protruding from said partitions into said stalls at a levelbelow that of -ithe feet of a jockeyv mounted on a racehorse,

`the surfaces of said dash boards extending at y Va downward :incline from said partitions and being directed down at their point of furthest Vprotrusion lfrom said partitions.

. 2.111 a stall gate, stalls, partitions later#` ally separating said stalls, la solid: padding ,at the lowerrends Iof saidk partitions and smooth dash boardsprotruding from said partitions intosaid stalls, the surfaces of said dash 'boardsextending at a downward incline..

andfmerging into said padding. below their point .of furthest plotrusion from said lpartitions. A l

3. v Infastall fgate, stalls, a yscreened frame vertically confining said stalls, rscreened par- A.titions"suspended from said frame, ylower,

curved ends,` on lsaid partitions :and padding ,extending up vfrom saidlower, curved ends and merging -i-nto saidscreened partitions.

Y 4. A stall gate Vfor race tracks, comprising .a platform `arranged `beside the race track, `a

boomI fextendingover :said :race track, parti-- `tions .suspended Lfrom said 'boo'rnA onto said Vrace traok,and Ameans 4mounted on said plat formf `operatively yconnected with" said `partitionsonto said boom. a

n; fAistall gate-formace tracks, comprising ayplatformvfarranged beside a" racetrack, a boom extending from said platformoversaid trace track, Ipartitions suspended fromsaid Aboom onto said race track, `and operative means-upon said platform adapted to colflapse said partitions and saidfboom and to vswingvfsaid` boom from `a position extending .over ,the race track toa position beside said 6. A stall gate for race tracks, comprising va,platforrnrotatably arranged beside-thefrace ':track, a' boom extending 4from said platform ',pended `from saidboom; onto said racetrack,

and ameans :operatively -connected with said platform and said -partiftionsfby meanswof which said platform and ,partitions maybe simultaneouslyrotated and lifted, respecl tively. Y

, 7; In a stall ,gate-for race tracks, Va plaftf form arranged, beside the race track, jibs extending upward from said platform, troughshaped rails in said jibs,.a Aboom movable along said rails indsaidzgjibs, partitions suspendedfrom said boom onto said r race `track and Imeans adapted-to 'fold said yim partitions against-said boom,to. move said :tending :over said racev `track, partitions? suspended from said .boom ontosaid race track, and j operative meansadapted .to' foldVK said partitions yagainst said boom', to `movensaid boom -along said rails yand Lto swing vsaid *boom from `aposition extend-ing overrthe race track to avposition beside :saidarace Y track, said rails 'eat/ending.y substantially Y rectilinearly at an incline Y,and their p upper -ends vbeingdirectedto extend-in a substan- Etial-ly horizontal, direction.

9L Ina stall ,gate for `'race -tradkspaf platforme v.arranged @beside Lthe-race ftrack, izjibs collapsibly `mounted upon :said platform, c

trough-.shapedy rails infsaid .ajibs, acboom *movable :along `said, rails inssalid `jibs `and extending over said racetrack,` `partitions :suspended :from said. boom onto saidzraee track, means for supporting said boom fupon ysaid platform, when aat :it-slowest positionl along: said rails, said .boom :beinglrdisengaged -fromsaid Irails when ain :said 'lowest ipositionf :10.* :In a `stall gate for race tracks, a ,plat- `*form arranged loesidefthe `race track,v .fjibs ics mounted wupon .said f platform, trough- -shapedraifls in said jibs, cam lpartsnpon-z said `ibs, 'a boom movable :along said mails, partitions rotatably :suspended fromsaid boom,

and a connection fbetween. .said partitions which is operably engaged-by said'ca'm part.

, :141. A Vstall gate `for racetrack, compris- `-ing :a "platform arranged :beside the :race ftrack,.j,ibs extendingu Wardfafrom'said lfplatform trough-shaped `.railsinsaid jibs,rarboom race trackfa. hoistimountedf-on said `platform adapted to move said 'boom falon' said rails,

and gearing adapted :to rotate said ,platform `around a vertical =axis and fnected to'said'hoist.

l2. ,1h-stall: gate for race tracks, comprisoperatively con- Amovable along said rails `'in said ibs,;parti tions Vsuspended from saidwboom :onto lsaid ing a platform' larranged beside the, 1ra-ce s extending upward from; said :platform, trouglh-`shaped rails infsaid jjibs,a`

'movable along said vrails said -j-ibs,

' from partitions suspended from said boom onto said race track, a hoist mounted on said platform adapted to move said boom along said rails, gearing adapted to rotate said platform around a vertical axis, an opera-I tive connection between said gearing and said hoist, and means, operable by said boom, adapted to temporarily sever sald operative connection between said gearing and said hoist.

13. In a stall form arranged eside the race track, jibs fulcruined upon said platform, trou hi shaped rails in said jibs, a boom'mova le along said rails in said jibs and extendin over said race track, partitions suspende said boom, weights and weights substantially balancing the weight of said boom and said partitions around the point of support of said boom on said jibs.

Signed at New York in the county of New York and State of New York this 17th day of December, A. D. 1929. Y

ARTHUR E. .BIRTWISTLE ANTON ROESER.

gate for race tracks, a plat` s substantially Y kbalancing said jibs around their fulcrum, 

